package com.example.demo.config;

import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.HashMap;

@ResponseBody
@ControllerAdvice
public class MyExHandler {
    /*
    拦截所有的空指针异常，进行数据返回
     */
    @ExceptionHandler(NullPointerException.class)
    public HashMap<String,Object> nullException(NullPointerException e){
        HashMap<String,Object> result=new HashMap<>();
        result.put("code","-1");
        result.put("msg","空指针异常"+e.getMessage());
        result.put("data",null);
        return  result;
    }

    @ExceptionHandler(Exception.class)
    public HashMap<String,Object> exception(Exception e){
        HashMap<String,Object> result=new HashMap<>();
        result.put("code","-1");
        result.put("msg","异常"+e.getMessage());
        result.put("data",null);
        return  result;
    }
}
